Sprinkler device for locomotives.



3 SHEETS-SHEET 1.

JNVEN 1 v F. W. MARTIN. SPRINKLER DEVICE FOR LOCOMOTIVES.

APPLICATION man has. 15. 1.913.

' Patented July 20, 1915.

3 SHEETS -SHEET 2. i

mvzu'ron F. W. MARTIN. SPRINKLER 'DEVICE FOR LOCOMOTIVES; APPLICATION FILED FEB. 15. 1913.

Patented July 20, 1915 i 3 SHEETS-SHEET 3.

entrain erase FREDEBICK-W. Maseru, or new YORK, n.1, nssmnon '10 3'. s. corrm. or new roan, N. Y. V

SPIHINKLEB DEVICE FOR LOCOMOTIVES.

PatentedJu1y2i0, 1915.-

Application fiiea'rebruar 15,1913. Serial No. 748,537.

To all whom, it may concern Be it known that I, FREDERICK W. MAR- TIN, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Sprinkler Devices for Locomotives, of which the following is a specification.

This invention has reference to an improved form of sprinkler device for loco-.

' ple, inexpensive and easy to assemble; and.

the rovision of imoroved means for S11 plying the requisite air pressure for operating the sprinkler. My invention also con-' templates the provision, of an improved arrangement of piping connection when the air supply is drawn from the train pipe whereby to prevent excessive discharge of air'incase of breakaga etc, as will hereinaftel; more fully P1 .A further object of the invention resides in the provision of a valvular control device whereby the pipes may be thoroughly cleared of water after use, thus avoiding freezing'in the pipes in cold weather. These, together with such other objects as may hereinafter appear or are incident to my invention, means of a construction, various embodiments of which are illustrated in preferred form in the accompanying drawmgs,

wherein Fig, '1 is a partial longitudinal-section through a portion of a locomotivetender illustrating the application of one form of my invention thereto; Fig. 2 is a transverse section through the tender; Figs. 3, 1 and 5 are sectional views of details of the invention Fig. 6 is a sectional view similar to F ig; 1 but illustrates another embodiment of I the invention; and Fig. 7 illustrates another.

ap lication of my invention.

eferring now'particularly to Figs. 1 and 2, it Will be seen that I haveillustrated a.

portion of one of the water legs or compart- I attain by' ments 7 of a locomotive tender, and also a part of the firing deck 8 to more clearly ,point out the operativerelation and position of the parts. Lying within the leg 7 is a water reservoir 9 w 'ich comprises a casing or pipe section 10 threaded at each end for engagement with an intake cap -11 anda discharge cap 12. The caps are provided with brackets 13 which serve'as a means for attaching the reservoir to the wall of the tender. The intake cap 11 is enlarged to receive. the casing 14 of a piston check valve 15 which permitswater from the tender to flow freely into the reservoir but prevents it from being blown back into the tender when the water in the reservoir. is being expelled by the air pressure. Y

Bolted to the top of the leg 7 is an air reservoir 16 which is of substantially the same" construction as the water reservoir. Air under pressure 1s supplied the reservoir from the train pipe 17 by means of the pipe 18 and hollow plug 19 which is tapped into the cap of the reservoir. Air from the reservoir 16 is supplied to by means of a pipe 20 which opens into the casing 1 1, in a manner hereinafterdescribed, and which is controlled by the ,threeq'vay cock'21.

The water is carried from the water reser voir by means of the discharge pipe 22 to the endof which is connected a section of hose 23 or other flexible pipe. The pipe 22 is connected to the three-way cook 21 by means of a branch pipe 22*, is connected to the train pipe by the T 24:,

the water reservoir i and the pipe 18 and threaded bushing 25, which is provided 'with a restricted orifice .26 which isclearly illustrated in Fig. 3.

Attention is now directed to the intake of the water reservoir illustrated in section on a larger scale in Fig. 1. From an inspection of this figure, it will be seen that the casing 1 1 comprises a valvecylinder closed at the bottom by a cap top with a shoulder 28 threaded into the cap 11. The cylinder is openat the top and water from the tender has free access to the valve chamber. Mounted within. the cylinder is a valve piston 29 carrying a valve disk 30 adapted to seat on the valve seat 31; A

port 32 is formed in the casing and opens.

into the valve chamber beneath the piston 27 and provided at the 29, this port being connected to the pipe 20. i

A second port is formed in the casing and establishes communication between the valve chamber and the water reservoir. Beneath the valve seat 31 the casing is provided with a plurality of ports 3% opening to the interior of the water reservoir. .Vhen the valve is open, water from the tender flows into the. valve chamber and thence into the water reservoir through the ports 34., the port 33 being closed when the valve is in this position. The water in entering the valve chamber passes through the screen 35 which excludes dirt or other matter which might cause the valve to stick.

The three-way cock 21 is illustrated in section in Fig. 5, from inspection of which it will be seen that the port 21 of the cock, when in one position, establishes communication between the reservoir 16 and the pipe 20, and when in the other position, between the reservoir 9 and the sprinkler hose through the pipe 22 and the pipe 20.

The operation of the mechanism thus far described is as follows: lhe three-way cook 21 is turnedto admit air under pressure to the pipe :20, from which the air enters the port 32 beneath the valve piston which is elevated and seats the valve disk 30, thereby cutting ofi communication between the tender and the Water reservoir. his movement of the valve piston uncovers the port 33 and the air passes out through said port into the water reservoir and expels the water through the pipe 22 into the sprinkler hose. In cold Weather it is desirable to expel all the water from the sprinkler hose after it has been" in use in order to avoid freezing, and to accomplish this, the threeway cock is turned to permit the air remaining in the water reservoir to flow back from the train pipe such as would effect the setting of the train brakes.

From the foregoing, it will be clear that a predetermined quantity of water is constantly-at the disposal of the fireman and can be used without incurring danger of scalding or other injury through backflow of steam or hot \vatcr,,as frequently occurs when the sprinkler hciseis connected to the iIIJQCtOI' mechanism. 'the arrangement of parts is compact, simple and the device is eflicient in operation. The reservoirs are of simple and inexpensive construction and can be readily assembled'or taken apart, and the e port 26 in the bush- 7 iam-1e entire apparatus can be supplied to any the construction previously descri eci three-way cock 21 is prcvided for co; ling the admission of air into the and the water is expelled tl'irough tnc 0 charge pipe 22 to the sprinkle The pipe is connected to the cock by the pipe 22*, whereby the maining in the hose :23 ma be use. I

in F 7 l have shown the sam arrangement illustrated controls the operation (if the In order to prevent any excess from the piping connections for. scoop valve, ll have provided a lOllSi 25 adjacent the three-way con: 21, whit ot the same construction and is designed the same purpose as the bushing 25.

It will be seen that after use there may a siphonic action due to the presence of water in the upper part of the pipe 22 and the sprinkler pipe 23 whereby the water in the tender will be drawn out and continue to discharge through the sprinkler pipe. -By turning the valve 21 so that the air remaining in the water reservoir flows back through the pipe 20 to the connection. 22", the water in the sprinkler pipe is expelled. and the water in the pipe 22 remaining above thenormal level of the water will low back, whereby the suction is broken andv siphoning prevented.

Having thus described my invention and illustrated its use what I claim as new and desire to secure by Letters Patent is the following:

1. A sprinkler device for locomotives com prising in combination a main water tank, a, reservoir, a valve normally establishing communication between the main tank and the reservoir, a discharge pipe leading from the reservoir, a pipe for supplying air pres sure to the reservoir, said valve being moved to cut off communication between the main tank and the reservoir when air pressure is suppliedto the latter, and a valvular device common to the discharge pipe and the air supply pipe adapted when moved in one position to admit air into the air supply pipe to expel the Water from the reservoir lug to expel the water remaining therein. 2. A sprinkler dev ce for locomot ves comprising in combination a main water tank,

a reservoir, a valve, normally establishing communication between the main tank and the reservoir a discharge pipe leading from the reservoir, a pipe for supplying air pressure to the reservoir, said valve being moved to cut off communication between the main tank and the reservoir when air pressure is supplied-to thelatter, a source of air supply and a valvular device controlling thesupply of air both -to theair-supply pipe and the discharge pipe adapted when moved in one position to establish communication between the source of supply and the air supply pipe whereby to expel. water from the reservoir into the discharge,pipe,- and when in another position to establish communication between the source of supply and the discharge-pipe to expel the water remaining therein.

In testimony whereof I have hereunto signed my name in the presence of the two subscribed witnesses.

FREDERICK W. IvIARTIN. Witnesses JOHN L. MoHUN, A. I. DENNELLEY. 

